[libc-commits] [libc] [llvm] [libc][math][c23] Add atan2f16 function (PR #183531)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- libc/shared/math/atan2f16.h libc/src/__support/math/atan2f16.h libc/src/math/atan2f16.h libc/src/math/generic/atan2f16.cpp libc/test/src/math/atan2f16_test.cpp libc/test/src/math/exhaustive/atan2f16_test.cpp libc/test/src/math/smoke/atan2f16_test.cpp libc/shared/math.h --diff_from_common_commit
``````````

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``````````diff
diff --git a/libc/test/src/math/exhaustive/atan2f16_test.cpp b/libc/test/src/math/exhaustive/atan2f16_test.cpp
index 8690d6379..ea3e4fed1 100644
--- a/libc/test/src/math/exhaustive/atan2f16_test.cpp
+++ b/libc/test/src/math/exhaustive/atan2f16_test.cpp
@@ -10,7 +10,8 @@
 // Build with ninja, then run the test binary manually (NO_RUN_POSTBUILD).
 //
 // Run with log (from build dir, test is slow so useful for offline runs):
-//   projects/libc/test/src/math/exhaustive/libc.test.src.math.exhaustive.atan2f16_test.__unit__ 2>&1 | tee atan2f16_exhaustive_$(date +%Y%m%d_%H%M%S).log
+//   projects/libc/test/src/math/exhaustive/libc.test.src.math.exhaustive.atan2f16_test.__unit__
+//   2>&1 | tee atan2f16_exhaustive_$(date +%Y%m%d_%H%M%S).log
 //
 
 #include "exhaustive_test.h"
@@ -44,9 +45,9 @@ struct Atan2f16Checker : public virtual LIBC_NAMESPACE::testing::Test {
             rounding);
         failed += (!correct);
         if (!correct) {
-          EXPECT_MPFR_MATCH_ROUNDING(
-              mpfr::Operation::Atan2, input, LIBC_NAMESPACE::atan2f16(y, x),
-              1.5, rounding);
+          EXPECT_MPFR_MATCH_ROUNDING(mpfr::Operation::Atan2, input,
+                                     LIBC_NAMESPACE::atan2f16(y, x), 1.5,
+                                     rounding);
         }
       } while (ybits++ < y_stop);
     } while (xbits++ < x_stop);
@@ -57,7 +58,8 @@ struct Atan2f16Checker : public virtual LIBC_NAMESPACE::testing::Test {
 using LlvmLibcAtan2f16ExhaustiveTest =
     LlvmLibcExhaustiveMathTest<Atan2f16Checker, 1 << 8>;
 
-// All float16 bit patterns (excluding NaN payloads for speed; include if desired).
+// All float16 bit patterns (excluding NaN payloads for speed; include if
+// desired).
 static constexpr uint16_t ALL_BITS_START = 0x0000U;
 static constexpr uint16_t ALL_BITS_STOP = 0xFC00U; // finite + inf, no NaN
 

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https://github.com/llvm/llvm-project/pull/183531